Carbon holder



c. L. KELLY CARBON HOLDER Dec. 17, 1935.

Filed Jan. 2 6, 1955 I NVE NTOR.

Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE Claims.

- called.

The present invention is particularly useful in providing a. holder for sheets of carbon which may be inserted and kept between continuous rolls of paper and fanfold paper. The device is intended H primarily for use upon a typewriting machine which is provided with an attachment comprising a special frame for holding rolls of strip paper or fanfold paper and for concurrently holding a carriage upon which a carbon sheet holder, hereinafter described, is adapted to ride;

The present invention has for its objects, among others, the provision of An unique and improved holder for carbon paper or the like;

A strip holder for carbon paper suited for attachment to a carriage and readily movable therewith between parallel sheets of paper; and

A new and improved carbon paper holder possessing means for connection with a carriage and having an improved means for securing the carbon paper thereon. I

These objects, and such other objects as may a sheet of hereinafter appear, are obtained by the novel construction,' unique arrangement, and improved combination of the several elements which constitute the invention, one embodiment of which is illustrated in the accompanying single sheet of drawing, in which:

Figure 1 is a more or less schematic representation of a conventional typewriter having a frame for holding fanfold paper and for supporting the carbon paper holders hereinafter described, parts of the typewriting machine and attachment being broken away to show the construction and use of the carbon holder;

Figure 2 is a plan view of a main or base-strip employed in the device illustrated in Figure 1 Figure 3 is a plan view of a member insertable into and to be used with the base strip illustrated in Figure 2;

Figure 4 is a fragmentary plan view of the end of a sheet of carbon paper adapted to be secured upon the strips illustrated in Figures 2 and 3;

Figure 5 is a fragmentary longitudinal section of base strip, holding strip and carbon sheet;

Figure 6 is a fragmentary elevation of the same 5 parts or elements; and

Figure 7 is a cross section on Figure 5.

Like reference characters are used to designate similar parts in the drawing and in the description 10 hereinafter given. 4

Figure 1 illustrates a typewriter of conventional manufacture having at the upper back part thereof'a vertical frame. The typewriter l 0 comprises a keyboard l'l, carriage l2, type bars [3, and a frame surface M in carriage I2. A vertical frame members designated I5 is disposed upon support l4 and is secured to the carriage l2 in a firm manner.

the line 66 of Frame I5 has side members I 6. Side members vdisposed upon the frame for limiting upward movement of the carriage I 8 and to indicate its relative position. The carriage IB comprises a. rear transverse member 2|, the pins l9 previously mentioned, a series of carbon holding strips 22, and crossbar 23 detachably connected at the front 9 by fastening means 24 to the pins [9. The strips 22 are illustrated in Figures 2 to 7 inclusive of the drawing. The carriage also carries finger pieces I 8a which arrest movement of the carriage upwardly and downwardly when the carriage engages upper stop 20 and a lower stop 20a.

The typewriter described is operated in substantially the following manner.

Fanfold paper or matched strips of paper are disposed at the rear of the typewriter.- paper is designated 25 and comprises the desired number of sheets. Paper 25 is guided upwardly over the vertical frame members where it rides upon a rolleror bar. The paper is then directed downwardly and around the platen 26 of the typewriting machine. The forward edges of the paper are in alinement. The first and succeeding forms are in registry. The paper passes carriage l8 on its downward flight.

Carbon holding strips 22 with carbon sheets attached thereto are inserted between each of the sheets of fanfold paper, the free end of the carbon depending downwardly and being movable with the paper 25 around the platen 26. Several sheets of carbon paper may be inserted between The 40 I parallel strips of paper. The crossbar 23 is re.- moved to load the strips holding the carbon and is replaced before use. As desired, the carbon sheets may be first inserted anterior to fanfold paper being threaded into the machine or after it has been so threaded.

By the arrangement shown, sheets of carbon paper are positioned in uniform registry with a form about to be typed. After typed impressions on the form have been completed, the pressure release lever 21 controlling the previous rolls (not shown) riding on platen 28 is actuated. The carriage l8 at the rear of the machine is then moved upwardly to a position determined bythe stop or pointer 28. In its movement, the carriage l8 carries with it the several carbon sheets attached to holders 22 on pins i9. Such movement will allow the lower edge of the carbon paper to be registered withthe front edge of the next fanfold form.

The carriage roll release lever ismovedto a locked position to reestablish pressure between the paper pressure rolls and the platen 28, whereupon the previously impressed form is drawn around the platen 26-and out of the machine.

' As such typed form is pulled from the machine, it draws with it around the platen 28 the next succeeding form, such next succeeding form having the carbon paper upon strips 22 between the several sheets thereof. The first mentioned form is then torn loose from the continuous strip along the scored lines which penetrate each of the forms in registry. The typed form is complete and the copies thereof are ready for distribution.

Typewritten impressions are then made upon the'top sheet of the second form the carbonat the back thereof producing impressions upon the second sheets between the top sheet and platen 28. When the second form is typed, a repetition of the same operations is had, i. e. releasing the pressure rolls, lifting the carriage l8 and thus removing the carbon from registry withthe second form into registry with the third form. Subsequently, the second form is advanced for detachment from the strip of fanfolds, and for removal from the machine, concurrently bringing the third form into position'i'or typing.

Reference will now be had to the carbon holders 22 which form an important part of the apparatus just described. Such apparatus is but one of a number of devices in which the holders 22 may be employed.

The base or holding strip of holder 22 comprises an elongated rectangular member 38 (Figure 2) of suitable tough, flexible, and preferablyunstretchable material. Cut therein by any suitable manner or means are a plurality of transverse slots. The holder 22 shown inFigure 1 has six of such slots, two (31 and 32) adjacent the center which are rather widely spaced, and two adjacent each end, 33 and 34, and 35 and 36, which are closely spaced. Grommets 31 and 38 are secured at the extreme corners of the strip 38 for attachment to pins I8 in the mechanism in which the carbon paper is to be used, as for example, a typewriter, a billing typewriter, an are-- counting machine, or a bookkeeping machine.

A second strip 48 illustrated in Figure 3 may be of and generallyis of lighter material than the strip 38 illustrated in Figure 2. The strip 48 comprises a central portion 4| which is substantially wider than the several slots in the first named strip. A cutout 42 for the thumb m y be formed at the lower central edge of the wide part 4| of the second strip 48. The corners 43 and 44' of the wide section of the second strip are rounded. At each side of the center 4| are elongated sections 45 and 48 with parallel sides terminating 5 in'rounded ends 41 and 48.

Carbon paper suitable for use with the two strips 38 and 48 comprises a sheet 58 of suitable texture having transferrable impression material upon one or both sides thereof and over the main 1(] body of the sheet. One end 5| of the sheet preferably is free from a coating of impression material, the end 5|v of the sheet comprising a section substantially double the width of the strip 38 illustrated in Figure 2. In end 5| of the carbon sheet are two series of slots in different. planes, each series being in alignment and the slots being complemental to one another and complemental to the slots in the first referred to strip. The slots in sheet 58 in the upper plane 2 are designated 3| to 36, with the letter a attached, and those in the lower plane are designated by the same numbers with b attached. Complemental slots thus all have the same refference numeral and are distinguished by letters 2. or absence of letters. Only six slots 33a, 34a,3|a, 33b, 34b, and 3lb show.

In use a number of carbon sheets of the prop-. er size are selected. These are folded on a line intermediate the two series (a and b) of slots 3 therein. When so folded, the strip 38 shown on Figure 2 is inserted between the folded over portions. of the carbon sheet. Registry between the several series of slots in the carbon paper 58 and in the holder 38 is obtained a Thereupon, the second strip 48, which is highly flexible, is threaded through the slots. Member 48 is threaded into such slots by inserting its two ends 41 and 48 through the central series of slots 3| and 32 withv the thumb opening down 42.4 Thereafter each end 41 and 48 of the second strip 48 is inserted through the end slots in the carbon paper. and in the holder, 1. e. one end through slots 33 and 34 and the other end through slots Pro 35 and 36. 4

' between carbon paper and carbon paper holder is obtained. Removal of the strip 48 is had by slightly flexing either strip, 38 or 48, whereupon the strip illustrated in Figure 3 is gripped between the thumb and forefinger and is withdrawn in a straight line normal to the body of thebase strip 38.

Loading of a sheet of carbon paper onto a holder 22 requires but a few seconds. Removal of the holding strip is substantially an instantaneous operation. Threading a holder by grommets 31 and 38 into pins l9 requires practically no time whatever.

By the arrangement disclosed and described, any number of carbon sheets may be attached to carriage l8 for accurate registry and for movement together. The carbon sheets 58 may be of prising a base strip having grommets at its corners and a series of slots therein, and a'second strip inserted into the slots in said base strip.

2. A holder for a sheet of carbon paper, comprising a flexible base strip having transverse slots and an eyelet at each end, and a more flex- I 'ible strip insertable into saidtransverse slots for holding the carbon paper on said flexible base strip.

3. In combination, a sheet of carbon paper, a

15 ing with each other and with the series of slots in 3 said base strip when the carbon paper is folded, and the holding strip being threaded into said coinciding slots in said carbon sheet and base strip.

4. The combination described in claim 3, and

in which said base strip has grommets at its corners.

5. The combination described in claim 3, and. in which said base strip has grommets at its corner, and said holding strip is more flexible than said base strip and has an enlarged central section' to prevent its displacement from said base strip.

CHARLES L. KELLY. 

